#include <iostream>
#include <stdio.h>
using namespace std;

class AA
{ 
public :
  AA() 
  {  
    a=10;
  }
  AA(int a)
  {
    this->a=a;
  }
  void get(AA *a1)
  {
    int i=this->a;
    printf("%d\n",i);
  }
private:
  int a;
};


int main()
{   
  AA a(520);
  a.get(this);
  return 0;
}